/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.io.synthetic.delay;



import com.bff.gaia.unified.sdk.io.Source;

import com.bff.gaia.unified.sdk.io.synthetic.SyntheticSourceOptions;



import java.util.Random;



/** Imposes delays in synthetic {@link Source.Reader} classes. */

public class ReaderDelay {



  private SyntheticSourceOptions options;



  public ReaderDelay(SyntheticSourceOptions options) {

    this.options = options;

  }



  public void delayRecord(SyntheticSourceOptions.Record record) {

    // TODO: add a separate distribution for the sleep time of reading the first record

    // (e.g.,"open" the files).

    long hashCodeOfVal = options.hashFunction().hashBytes(record.kv.getValue()).asLong();

    Random random = new Random(hashCodeOfVal);

    SyntheticDelay.delay(

        record.sleepMsec, options.cpuUtilizationInMixedDelay, options.delayType, random);

  }



  public void delayStart(long currentElement) {

    SyntheticDelay.delay(

        options.nextInitializeDelay(currentElement),

        options.cpuUtilizationInMixedDelay,

        options.delayType,

        new Random(currentElement));

  }

}